How to service the Engine Control Module on Mercury Mariner?

In order to service the Engine Control Module, disconnect the battery ground cable, and the PCM stud bolt nut, set the wiring harness to the side. In this step, the three PCM connectors are to be disconnected and the two stud bolts pulled off. Reassemble by turning the steps round, screwing the stud bolts to 9 Nm (80 lb-in).

How to remove and replace the Engine Control Module (ECM) on Mercury Mariner?

In case of replacing the powertrain control module (PCM), make sure you have all the keys of the customers. Recall the module configuration, unplug PCM connectors and unscrew PCM. Fit the new PCM, including the cowl seal, tighten bolts, reconnect and reestablish the module setup as necessary, reprogramming the passive anti-theft system.

OEM Mercury Mariner Engine Control Module

Engine Control Computer

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43 Engine Control Modules found

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Mercury Mariner ECM Part Number: AL8Z-12A650-ACC
$326.62 MSRP: $451.84
You Save: $125.22 (28%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Module - Engine Control - EEC; Engine Control Module
- Replaces: AL8Z-12A650-ACA, AL8Z-12A650-ACB
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2010 Mercury Mariner | Base, Premier | 6 Cyl 3.0 L FLEX
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Mercury Mariner ECM Part Number: AL8Z-12A650-BLF
$373.04 MSRP: $516.07
You Save: $143.03 (28%)
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Product Specifications
- Other Name: Module - Engine Control - EEC; Engine Control Module
- Replaces: AL8Z-12A650-BLD, AL8Z-12A650-BLE
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2011 Mercury Mariner | Base | 4 Cyl 2.5 L GAS
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Mercury Mariner ECM Part Number: 8U7Z-12A650-YA
$491.46 MSRP: $721.67
You Save: $230.21 (32%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Module - Engine Control - EEC; Engine Control Module
- Replaces: 8L8Z-12A650-BCA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2008 Mercury Mariner | Base | 4 Cyl 2.3 L GAS
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Mercury Mariner ECM Part Number: AL8Z-12A650-BKF
$615.04 MSRP: $911.17
You Save: $296.13 (33%)
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Product Specifications
- Other Name: Module - Engine Control - EEC; Engine Control Module (ECM); Module - Engine Control - Eec V; Engine Control Module
- Replaces: AL8Z-12A650-BKE, AL8Z-12A650-BKD
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2011 Mercury Mariner | Base | 4 Cyl 2.5 L GAS
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Mercury Mariner ECM Part Number: 8U7Z-12A650-XARM
$464.53 MSRP: $728.33
You Save: $263.80 (37%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Reman Module - Engine Control - EEC; Engine Control Module (ECM)
- Replaces: 8U7Z-12A650-XA, 8L8Z-12A650-AEB, 8L8Z-12A650-AYA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2008 Mercury Mariner | Base | 4 Cyl 2.3 L GAS
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Mercury Mariner ECM Part Number: AL8Z-12A650-ATC
$674.44 MSRP: $999.17
You Save: $324.73 (33%)
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Product Specifications
- Other Name: Module - Engine Control - EEC; Engine Control Module (ECM); Module - Engine Control - Eec V; Engine Control Module
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2011 Mercury Mariner | Base, Premier | 6 Cyl 3.0 L FLEX
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Mercury Mariner ECM Part Number: 8L8Z-12A650-AZA
$744.75 MSRP: $1103.33
You Save: $358.58 (33%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Module - Engine Control - EEC; Engine Control Module (ECM); Module - Engine Control - Eec V; Engine Control Module
- Manufacturer Note: 8M72A20520 (ZEB0)
- Replaces: 8L8Z-12A650-AGB
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2008 Mercury Mariner | Base | 4 Cyl 2.3 L GAS
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Mercury Mariner ECM Part Number: AL8Z-12A650-BRF
$626.18 MSRP: $927.67
You Save: $301.49 (33%)
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Product Specifications
- Other Name: Module - Engine Control - EEC; Engine Control Module (ECM); Module - Engine Control - Eec V; Engine Control Module
- Replaces: AL8Z-12A650-BRE, AL8Z-12A650-BRD
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2011 Mercury Mariner | Base, Premier | 6 Cyl 3.0 L FLEX
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Mercury Mariner ECM Part Number: AL8Z-12A650-AKA
$316.19 MSRP: $437.42
You Save: $121.23 (28%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Module - Engine Control - EEC; Engine Control Module (ECM); Engine Control Module
- Replaces: AL8Z-12A650-YA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2010 Mercury Mariner | Base, Premier | 4 Cyl 2.5 L GAS
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Mercury Mariner ECM Part Number: AL8Z-12A650-AGA
Product Specifications
- Other Name: Module - Engine Control - EEC; Engine Control Module (ECM); Engine Control Module
- Replaces: AL8Z-12A650-VB
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2010 Mercury Mariner | Base, Premier | 4 Cyl 2.5 L GAS
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Mercury Mariner ECM Part Number: AL8Z-12A650-ARB
Product Specifications
- Other Name: Module - Engine Control - EEC; Engine Control Module (ECM); Module - Engine Control - Eec V; Engine Control Module
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2011 Mercury Mariner | Base | 4 Cyl 2.5 L GAS
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Mercury Mariner ECM Part Number: 9L8Z-12A650-ACB
Product Specifications
- Other Name: Module - Engine Control - EEC; Engine Control Module (ECM); Engine Control Module
- Manufacturer Note: 9M71A30X21 (FEC1)
- Replaces: 9L8Z-12A650-ACA, 9L8Z-12A650-PJ, 9L8Z-12A650-PH, 9L8Z-12A650-PK
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2009 Mercury Mariner | Base, Premier | 6 Cyl 3.0 L GAS
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Mercury Mariner PCM, Black Oak Part Number: 5L8Z-12A650-FK
Product Specifications
- Other Name: Module - Pcm - Black; Engine Control Module (ECM); ECM; Module - Pcm - Black Oak; Engine Control Module
- Manufacturer Note: 5M11A20511 (FMR9)
- Replaces: 5L8Z-12A650-FJ
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2005-2006 Mercury Mariner | Base, Convenience, Hybrid | 4 Cyl 2.3 L FULL HYBRID EV-GAS (FHEV), 4 Cyl 2.3 L GAS
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Mercury Mariner ECM, Black Oak Part Number: 5L8Z-12A650-NH
Product Specifications
- Other Name: Module - Pcm - Black Oak; Engine Control Module (ECM); Engine Control Module
- Manufacturer Note: 5M12A20511 (NAZ7)
- Replaces: 5L8Z-12A650-NG
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2005-2006 Mercury Mariner | Base, Convenience, Hybrid | 4 Cyl 2.3 L FULL HYBRID EV-GAS (FHEV), 4 Cyl 2.3 L GAS
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Mercury Mariner PCM Part Number: 6L8Z-12A650-TC
Product Specifications
- Other Name: Module - Engine Control - EEC; Engine Control Module (ECM); Module - Engine Control - Eec V
- Manufacturer Note: 6M11A20510 (YVV2)
- Replaces: 6L8Z-12A650-TB
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2006-2007 Mercury Mariner | Convenience | 4 Cyl 2.3 L GAS
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Mercury Mariner PCM Part Number: 6U7Z-12A650-BTBRM
Product Specifications
- Other Name: Reman Module - Engine Control - EEC; Engine Control Module (ECM); Engine Control Module; ECM
- Replaces: 5L8Z-12A650-LH, 6U7Z-12A650-BTA, 6L8Z-12A650-XB, 6U7Z-12A650-BTARM
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2005-2007 Mercury Mariner | Luxury, Premier | 6 Cyl 3.0 L GAS
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Mercury Mariner ECM Part Number: 9L8Z-12A650-AEC
Product Specifications
- Other Name: Module - Engine Control - EEC; Engine Control Module (ECM); Module - Engine Control - Eec V; Engine Control Module
- Manufacturer Note: 9M71A20522 (NKE2)
- Replaces: 9L8Z-12A650-AF, 9L8Z-12A650-AEB, 9L8Z-12A650-AEA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2009 Mercury Mariner | Base, Premier | 4 Cyl 2.5 L GAS
View related parts
Mercury Mariner ECM Part Number: 9L8Z-12A650-DG
Product Specifications
- Other Name: Module - Engine Control - EEC; Engine Control Module (ECM); Module - Engine Control - Eec V; Engine Control Module
- Manufacturer Note: 9M72A20A10 (BMH6)
- Replaces: 9L8Z-12A650-DF
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2009 Mercury Mariner | Base, Premier | 4 Cyl 2.5 L GAS
View related parts
Mercury Mariner PCM Part Number: 6M6Z-12A650-BDRM
Product Specifications
- Other Name: Reman Module - Engine Control - EEC
- Replaces: 5U7Z-12A650-UA, 6M6Z-12A650-BC, 6M6Z-12A650-BD, 5M6Z-12A650-KB, 5M6Z-12A650-KC
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2006 Mercury Mariner | Hybrid | 4 Cyl 2.3 L FULL HYBRID EV-GAS (FHEV)
View related parts
Mercury Mariner ECM Part Number: AL8Z-12A650-BMC
Product Specifications
- Other Name: Module - Engine Control - EEC; Engine Control Module (ECM); Module - Engine Control - Eec V; Engine Control Module
- Replaces: AL8Z-12A650-BMB
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2011 Mercury Mariner | Base | 4 Cyl 2.5 L GAS

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Mercury Mariner Engine Control Module

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Mercury Mariner Engine Control Module Parts and Q&A

PCM, Black Oak
5L8Z-12A650-FK
Q: How to service the Engine Control Module on Mercury Mariner?
A: In order to service the Engine Control Module, disconnect the battery ground cable, and the PCM stud bolt nut, set the wiring harness to the side. In this step, the three PCM connectors are to be disconnected and the two stud bolts pulled off. Reassemble by turning the steps round, screwing the stud bolts to 9 Nm (80 lb-in).
ECM
8L8Z-12A650-BEARM
Q: How to remove and replace the Engine Control Module (ECM) on Mercury Mariner?
A: In case of replacing the powertrain control module (PCM), make sure you have all the keys of the customers. Recall the module configuration, unplug PCM connectors and unscrew PCM. Fit the new PCM, including the cowl seal, tighten bolts, reconnect and reestablish the module setup as necessary, reprogramming the passive anti-theft system.